1. <h:panelGroup> 
2.                                         <a4j:region renderRegionOnly="true"> 
3.                                             <h:selectOneMenu value="#{harianPenerimaanMBean.compoffices.officeId}" valueChangeListener="#{harianPenerimaanMBean.updatePerwakimName}" required="true" requiredMessage="Pilih Salah Satu" id="perwakim"> 
4.                                             <f:selectItem itemValue="" itemLabel="Pilih Kantor Wilayah/Perwakim"/> 
5. <!--                                            <f:selectItem itemValue="" itemLabel="Semua Kantor Wilayah/Perwakim"/>--> 
6.                                             <f:selectItems value="#{harianPenerimaanMBean.perwakim}"/> 
7.                                             <a4j:support event="onchange" reRender="kanim" ajaxSingle="true"/> 
8.                                         </h:selectOneMenu> 
9.                                         <h:panelGroup id="msgPerwakim"> 
10.                                             <h:message for="perwakim" styleClass="error"/> 
11.                                         </h:panelGroup> 
12.                                             </a4j:region> 
13.                                     </h:panelGroup> 

1. h:panelGroup> 
2.                                         <a4j:region renderRegionOnly="true"> 
3.                                             <h:selectOneMenu value="#{harianPenerimaanMBean.compoffices.officeId}" id="kanim" required="true" requiredMessage="Harus diPilih!"> 
4.                                             <f:selectItem itemValue="0" itemLabel="---Pilih Jenis PNBP---"/> 
5.                                             <f:selectItems value="#{harianPenerimaanMBean.kanim}"/> 
6.                                             <a4j:support event="onchange" ajaxSingle="true"/> 
7.                                         </h:selectOneMenu> 
8.                                     <h:panelGroup id="msgKanim"> 
9.                                 <h:message for="kanim" styleClass="error"/> 
10.                             </h:panelGroup> 
11.                                             </a4j:region> 
12.                                     </h:panelGroup> 

1.         public HarianPenerimaanMBean() { 
2.      
3. //    layananJpaController = new LayananJpaController(); 
4.     compOfficesJpaController = new CompOfficesJpaController(); 
5.     compoffices = new CompOffices(); 
6.      
7. perwakim = new ArrayList<SelectItem>(); 
8. kanim = new ArrayList<SelectItem>(); 
9. jenisPNBP = new ArrayList<SelectItem>(); 
10.  
11.     } 
12.  
13.  
14.  
15.  
16.             public void updatePerwakimName(ValueChangeEvent event){ 
17.                 Long compOffices = (Long) event.getNewValue(); 
18. //                BigInteger id = new BigInteger(compOffices.toString()); 
19. //                System.out.println(id); 
20.                 setKanim(new ArrayList<SelectItem>()); 
21. //                getKanim().add(new SelectItem("","Semua Kantor Imigrasi")); 
22.                 for(CompOffices compOffice : compOfficesJpaController.findCompOfficesEntities()){ 
23.                     if (compOffice.getOfficeId().longValue() == compOffices) { 
24.                         System.out.println(compOffice.getOfficeName()); 
25.                         getKanim().add(new SelectItem(compOffice.getOfficeId().longValue())); 
26.                      
27.                     } 
28.                  
29.                  
30.                 } 
31.  
32.  
33.             } 
34.              
35.              
36. //             
37. //            public void updatePerwakimName(CompOffices compOffices){ 
38. //                Long comOffice  = (Long) compOffices.getOfficeId(); 
39. //            getPerwakim().clear(); 
40. //            for(CompOffices compOffice : compOfficesJpaController.findCompOfficesEntities()){ 
41. //                if (compOffice.getOfficeId() == comOffice){ 
42. //                    getPerwakim().add(new SelectItem(compOffice, compOffice.getOfficeName())); 
43. //                 
44. //                } 
45. //             
46. //             
47. //            } 
48. //             
49. //            } 
50.       
51.              
52.              
53.              
54.             public List<SelectItem> getJenisPNBP(){ 
55.     List<SelectItem> jenisPNBP = new ArrayList<SelectItem>(); 
56.     jenisPNBP.add(new SelectItem("1","PNBP Imigrasi")); 
57.     jenisPNBP.add(new SelectItem("2","PNBP AHU")); 
58.     jenisPNBP.add(new SelectItem("3","PNBP Deplu")); 
59.     jenisPNBP.add(new SelectItem("4","Non PNBP")); 
60.      
61.     return jenisPNBP; 
62.     } 
63.  
64.  
65.  
66.  
67.     public Addresses getAddress() { 
68.         return address; 
69.     } 
70.  
71.     public void setAddress(Addresses address) { 
72.         this.address = address; 
73.     } 
74.  
75.     public Biaya getBiaya() { 
76.         return biaya; 
77.     } 
78.  
79.     public void setBiaya(Biaya biaya) { 
80.         this.biaya = biaya; 
81.     } 
82.  
83.     public CompOffices getCompoffices() { 
84.         return compoffices; 
85.     } 
86.  
87.     public void setCompoffices(CompOffices compoffices) { 
88.         this.compoffices = compoffices; 
89.     } 
90.  
91.     public DetailPendapatan getDetail() { 
92.         return detail; 
93.     } 
94.  
95.     public void setDetail(DetailPendapatan detail) { 
96.         this.detail = detail; 
97.     } 
98.  
99.     public List<SelectItem> getJenis() { 
100.         return jenisPNBP; 
101.     } 
102.  
103.     public void setJenis(List<SelectItem> jenis) { 
104.         this.jenisPNBP = jenis; 
105.     } 
106.  
107.     public JenisLokasi getJenisLokasi() { 
108.         return jenisLokasi; 
109.     } 
110.  
111.     public void setJenisLokasi(JenisLokasi jenisLokasi) { 
112.         this.jenisLokasi = jenisLokasi; 
113.     } 
114.  
115.     public List<SelectItem> getKanim() { 
116. //    List<SelectItem> kanim= new ArrayList<SelectItem>(); 
117.     return kanim; 
118.     } 
119.  
120.     public void setKanim(List<SelectItem> kanim) { 
121.         this.kanim = kanim; 
122.     } 
123.  
124.     public Layanan getLayanan() { 
125.         return layanan; 
126.     } 
127.  
128.     public void setLayanan(Layanan layanan) { 
129.         this.layanan = layanan; 
130.     } 
131.  
132.     public Pendapatan getPendapatan() { 
133.         return pendapatan; 
134.     } 
135.  
136.     public void setPendapatan(Pendapatan pendapatan) { 
137.         this.pendapatan = pendapatan; 
138.     } 
139.  
140.     public Permohonan getPermohonan() { 
141.         return permohonan; 
142.     } 
143.  
144.     public void setPermohonan(Permohonan permohonan) { 
145.         this.permohonan = permohonan; 
146.     } 
147.  
148.     public List<SelectItem> getPerwakim() { 
149.          
150.          
151.             List<SelectItem> perwakim= new ArrayList<SelectItem>(); 
152.             perwakim.add(new SelectItem("","Semua Kantor Wilayah/Perwakim")); 
153.                       for(CompOffices com : compOfficesJpaController.findCompOfficesEntities()){ 
154.                           if(com.getOfficeType().equals(new BigInteger("2"))){ 
155.                     perwakim.add(new SelectItem(com.getOfficeId(), com.getOfficeName())); 
156.                           } 
157.                 } 
158.                 return perwakim; 
159.         } 
160.          
161.         
162.  
163.     public void setPerwakim(List<SelectItem> perwakim) { 
164.         this.perwakim = perwakim; 
165.     } 
166.  
167.  
168.  
169. } 

thanks guys